CAA warns: Lithium-ion batteries in checked luggage pose top fire risk to aircraft

The United Kingdom's Civil Aviation Authority (CAA) has identified lithium-ion batteries as the leading fire risk to aircraft, prompting a renewed advisory for passengers to keep such devices in cabin baggage rather than checked-in luggage, BBC News has reported.

Lithium-ion batteries are commonly found in power banks, laptops, mobile phones, smart watches, and vapes. The CAA's warning comes amid increasing concerns over thermal runaway — a chain reaction that can cause batteries to overheat and catch fire.

According to aviation safety experts, the enclosed environment of an aircraft's cargo hold makes it difficult to detect and extinguish a fire caused by a faulty battery. In contrast, cabin crew can respond quickly to such incidents if the device is in the passenger cabin.

The CAA has issued a blanket reminder to travellers flying with global airlines to carry all devices containing lithium-ion batteries in their hand baggage. This advisory applies to both domestic and international flights.

While the risk of a battery fire remains low, the consequences can be severe. In recent years, several incidents involving overheating power banks and e-cigarettes have led to emergency landings or evacuations.

Passengers are advised to ensure that devices are switched off or in sleep mode, and that power banks are not crushed or damaged. Airlines may also have specific regulations regarding the number of spare batteries allowed in cabin baggage.

The CAA's warning underscores the need for vigilance as summer travel increases, with more passengers carrying electronic devices.